Country
Language
Often, yes. A driver who works on a public holiday is entitled to compensatory rest, another day off in its place, and many coach companies pass that on. How big the difference is, the coach company tells you itself.
Not by law. It is the holiday of the Flemish Community, a day off for the Flemish government, but for a private company it is an ordinary working day, unless the company makes it a day off itself.
They are Sundays, and those are not listed separately. The Monday after, Easter Monday and Whit Monday, are public holidays by law.
Because it is not a public holiday by law. Schools in Flanders are closed that Friday, though, and many people take a bridge day; expect it to be busy.